Another post from Floyd requiring a long answer. I'll do my best to answer a few of your questions, but I don't have a lot of time at the moment.
I wonder, what was so scary and evil about the Mines Of Moria. I read in the book that even Aragorn said that he'd been through there once and he had a bad memory of it.
I think after being abandoned by the Dwarves, Moria would have been a dark and frightening place. Confusing passages disappearing deep underground, and possibly crawling with orcs. It wouldn't have been pleasant. And do not forget the aura of the Balrog.
Can anyone tell me about the history of Moria?? If possible, since the days of Durin.
I'll save this for someone with a little more time. It was discovered by Durin early in the First Age, however, and became the greatest of the Dwarven Halls. Moria was the only known source of Mithril, and so those who lived there became fabulously rich, particularly during the Second Age when the Noldor city of Ost-en-edhel was built at its west gate. The Dwarves dug too deep for Mithril, however, and released the Balrog from the caverns in which had been trapped since the Great Battle against Morgoth at the end of the First Age. The rest was history. It and its Orc minions drove out the Dwarves.
And, by the way, Balin did try to make it worth living again, didn't he? Was it just the Orcs that killed those Drarves or was it also the Balrog?
I wrote a short story about this entitled "Balin's Folly", which can be found in the Fan Fiction section on the left. I used a little poetic licence, but most of the story is based around events Tolkien had written.
And where did this Balrog come from??
At the end of the First Age there was a huge battle between the forces of good and evil. As well as sinking a huge section of Western Middle Earth (Beleriand) below the ocean, a lone fleeing Balrog became trapped in a cavern deep in the roots of the Misty Mountains. It was this same beastie the Dwarves released when they dug too deep while mining for Mithril.
Somebody answer me!!!